every time I try to download a game, it brings me to my billing information

You usually need a payment method -

You usually need a functioning payment method for your account. Even to download free apps, to re-download or to update apps.

You can find the acceptable payment methods for your country here;

Payment methods that you can use with your Apple ID - Apple Support

M1 Mac mini, macOS 14.6.1;  Watch, series 7 GPS/cellular, watchOS 10.6; iPhone 12 Pro, iOS 17.6.1; TV 4th Gen, tvOS 17.6; HomePods, audioOS 17.6 and Airport Express w/ Airplay 2

If it costs you something it probably won't allow you download it if you don't have enough in your balance to cover the cost.